“As we were doing the shoot, I noticed that a rainbow had popped up in a few of the photos,” Brandau wrote on Facebook. “Kelly and I talked about how neat/cool/weird it was, and I literally had goosebumps/was on the verge of tears for most of her session.”

According to the Epoch Times, orbs are usually caused by light reflecting off dust in photographs, but some believe they represent the supernatural – like spirits or ghosts.

“Imagine how insane it was when I opened up the files on my computer and realized that the rainbows and orbs (yes I totally believe in orbs. Read up on them if you haven’t heard of them!) show up in almost all of the photos that we took that day,” Brandau wrote.

She wrote: "There is a rainbow on my belly in almost every picture and we had a miscarriage earlier this year and so our little man (who will be named after his Daddy) is our rainbow baby. And the orbs that are shown are of my favorite color green and from doing some research on what the color of an orb means, green is from a happy spirit visiting, sending healing energy. I truly believe my husband was there and is watching over the kids and I."